.content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  .sentence {
    border: 1px solid #1d1d1d;
    margin: 10px;
    width: 95%;
    overflow-y: auto;
    height: 50%;
  }
  .btn {
    margin: 0 auto;
  }
}
